Water leak internal on buick regal gs 1998

I have water leaking aroubnf the heater fan blower into the passenger side of my regal. I have checked both the cabin filter area and see no leaks and also used RTV so better seal around the squirrel cage fan assembly for the heater. This morning I vaumed out about 1/2 gallon of water

I have the same problem. This problem doesn't seem to be related tothe A/C system as we are in the middle of winter and I'm not using theA/C. Everytime it rains the passenger side (only) of the car fills upwith water so I go to a local car wash and vacuum out a half gallon ofwater. I purchased a new cabin air filter assembly but afterinspection the current air filter assembly seems water tight. Ibelieve my heater blower motor is going bad because of the leak as it is chirping like a bird andthis is why i believed it was cabin air filter related. Everytime I goto Jiffy Lube the technician comes in and shows me my filter and Iassumed he screwed something up when reinstalling. Do I need weather-striping some where or should I caulk something? Does anyone have apicture of the what the assembly should look like or know how to fixthis problem? We can't be the only ones with this problem... Thanksfor the help it is much appreciated!

-Poor Soaked 1999 Buick Regal OwnerAll,

I have the same problem. This problem doesn't seem to be related to
the A/C system as we are in the middle of winter and I'm not using the
A/C. Everytime it rains the passenger side (only) of the car fills up
with water so I go to a local car wash and vacuum out a half gallon of
water. I purchased a new cabin air filter assembly but after
inspection the current air filter assembly seems water tight. I
believe my heater blower motor is going bad because of the leak as it is chirping like a bird and
this is why i believed it was cabin air filter related. Everytime I go
to Jiffy Lube the technician comes in and shows me my filter and I
assumed he screwed something up when reinstalling. Do I need weather-striping some where or should I caulk something? Does anyone have a
picture of the what the assembly should look like or know how to fix
this problem? We can't be the only ones with this problem... Thanks
for the help it is much appreciated!

-Poor Soaked 1999 Buick Regal Owner

AnonymousDec 24, 2008

99 Buick Century had the similar problem. The blower motor stops working first. I later found one of the fuses was blown up. However after I replaced the bad fuse and turn on the fan, water was gushing out...

99 Buick Century had the similar problem. The blower motor stops working first. I later found one of the fuses was blown up. However after I replaced the bad fuse and turn on the fan, water was gushing out...

On 1998 Buick Regal my blower motor seems to freeze up when cold out and not work at all. When it is 40% or above it works just fine. Is this related to leak that sometimes soaks passenger floorboards? How can I solve this, I live in New England and need defroster/heat.On 1998 Buick Regal my blower motor seems to freeze up when cold out and not work at all. When it is 40% or above it works just fine. Is this related to leak that sometimes soaks passenger floorboards? How can I solve this, I live in New England and need defroster/heat.

AnonymousMar 16, 2014

how to change the heater fan in a 1992 buick regalhow to change the heater fan in a 1992 buick regal

I had this same problem. It is caused by water running downe the windshield and into the cabin air filter located under the cowling on the pasenger side. It is really easy to fix.

I've been told all "W" body GM cars have this same filter set up, so all 1997 through 2004 Buick Regals (mine is a 2001) and many other GMs have this problem. MY 2001 Regal would get 1-2 inches of water on the passenger side floorboard after a rain.

There are three things that can be done to prevent this and all three are quite easily accomplished. There is a water diverter weatherstrip above the filter that can become dislodged. Mine was out of place even though the filter had never been changed. I used RTV to glue this weather strip back in place. I also made a cover out of an old plastic 1 gallon antifreeze jug by cutting the ends off and then splitting it down the middle and doubling it to cover the filter but still remain above it so that air is not blocked. This is so that even if the diverter becomes dislodged again this still won't let water get to the filter. Once you pull the coweling, which is very easy to do with one plastic screw like fastener and two plastic "rivets" that you just pull out with needle nose plyers, you'll see what needs to be done. You'll need to use the ignition key to stop the wpers in mid-stroke on the windshield and open the hood to get clearence to the cowling. Speaking of the coweling, lastely I put a bead of RTV between the coweling and the windshield before puting it back on.
So for one tube of RTV, one old plastic jug, one hour of time using a pair of pliars and a knife I have fixed what had been a real PIA water leak. EASY!

There is a drain that must be plugged . it drains the condensation from the evaporitor on the AC system. these need to be cleaned once in a while. look from under the car around the firewall . you will see the tube. stick a wire up it to clean it out. and it will dry up. good luck paul

I had the same problem, it happened after changing the cabin air filter. So what I did and it fixed it was to use silicon and where the plastic cover over the air filter attaches there is a rubber gasket that is supposed to seal between the glass and the plastic cover. I carefully used the silicon and sealed all across the top of the plastic cover all the way towards the passenger side of the windshield and that fixed it. It's just a lousy rubber seal and not heater core or anything else, just seal from the center of the windshield all the way to the farthest side of the plastic cover. No problem.

Just got a email from this site saying a couple thousand people have read my solution. Wow, forgot I even wrote this, but let me say this, my passenger side floor boards have not leaked a drop since this fix. Funny thing about getting this email is that it just reminded me that I need to change that darn filter again. That will mean once again removing the cowling and clean the silicon off the windshield and the cowling, perfectly clean and then again running a perfect bead of silicon from center of the cowling to the passenger side and replace and then maybe a couple careful dabs towards the outside corner and a nice smooth finishing so it doesn't show at all. Don't worry, you'll know if you screwed up because next time in rains or you go through a car wash your floor will be wet and frankly you don't want water running down your dash anyhow and it's awful close to the fuse box. Hum, I'm going to the parts store and get me that darn filter, might as well, board anyhow. Good luck and RegalGS.org is your source. Sincerely ilregalJust got a email from this site saying a couple thousand people have read my solution. Wow, forgot I even wrote this, but let me say this, my passenger side floor boards have not leaked a drop since this fix. Funny thing about getting this email is that it just reminded me that I need to change that darn filter again. That will mean once again removing the cowling and clean the silicon off the windshield and the cowling, perfectly clean and then again running a perfect bead of silicon from center of the cowling to the passenger side and replace and then maybe a couple careful dabs towards the outside corner and a nice smooth finishing so it doesn't show at all. Don't worry, you'll know if you screwed up because next time in rains or you go through a car wash your floor will be wet and frankly you don't want water running down your dash anyhow and it's awful close to the fuse box. Hum, I'm going to the parts store and get me that darn filter, might as well, board anyhow. Good luck and RegalGS.org is your source. Sincerely ilregal

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If its the fan thats not coming on then i would check the blower motor resistor these are known for losing there connection at the pigtail.The location is usally on the passenger side down close to floor mounted on the heat duct with two screws.First try wiggling the pigtail with the ignition and fan switches on.

I am assuming you are talking about the blower motor , in the old days it was a resistor module that would go bad but on your buick its called an electronic blower control module and is mounted right by the blower motor under the passenger side dash.

U need to clear the AC condensation drain, crawl under the car on the passenger side and near the base of the engine firewall u will find a drain pipe, (about 3/4") clear t and the water will stop going on the passenger floor.

if you can smell it it must be in the cab andf the only way the coolant can leak in there is throuhg the heater matrix which is located under the dashboard, a way to find out is to check the floor for any excess moisture. if this is the case then it will def be that.